Performance evaluation of cellulose acetate (CA)/polyvinylpyrrolidone (PVP) membranes in the pervaporation separation of trimethyl borate/methanol azeotrope

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dc.contributor.authorOzekmekci, Mehtap
dc.contributor.authorÇopur, Mehmet
dc.date.accessioned2026-02-08T15:11:02Z
dc.date.available2026-02-08T15:11:02Z
dc.date.issued2025
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractIn this study, the performance of cellulose acetate (SA)/polyvinylpyrrolidone (PVP) blend membranes for the separation of trimethyl borate (TMB)/methanol azeotrope was investigated. The membranes were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-Ray diffractometer (XRD), thermogravimetric analysis (TGA) and contact angle measurements. The characteristic XRD peak intensity and contact angle of SA decreased with increasing PVP ratio. The effect of PVP ratio, feed temperature and methanol concentration in the feed were investigated in the pervaporation process. It was observed that flux increased and selectivity decreased with increasing PVP ratio. Feed temperature was found to have a positive effect on flux. The increase in the amount of methanol in the feed concentration caused the polymer chains to become more flexible, facilitating the diffusion of both methanol and TMB. Additionally, the reusability of the membrane was tested, and its physical and chemical structure integrity was confirmed by FTIR and SEM analyses. The optimum operating conditions for the SA-PVP-3 membrane were found to be 35°C temperature and azeotrope containing 25 wt% methanol. Under these operating conditions, the flux and selectivity were determined as 302.08 g/(m2h) and 46.92, respectively. © 2025, Turkish Energy, Nuclear and Mining Research Agency. All rights reserved.
dc.description.sponsorship(221N008)
dc.identifier.doi10.30728/boron.1590877
dc.identifier.endpage60
dc.identifier.issn2149-9020
dc.identifier.issue2
dc.identifier.scopus2-s2.0-105010061890
dc.identifier.scopusqualityQ4
dc.identifier.startpage49
dc.identifier.trdizinid1325186
dc.identifier.urihttps://doi.org/10.30728/boron.1590877
dc.identifier.urihttps://search.trdizin.gov.tr/tr/yayin/detay/1325186
dc.identifier.urihttps://hdl.handle.net/20.500.12885/5181
dc.identifier.volume10
dc.indekslendigikaynakScopus
dc.indekslendigikaynakTR-Dizin
dc.language.isotr
dc.publisherTurkish Energy, Nuclear and Mining Research Agency
dc.relation.ispartofJournal of Boron
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzScopus_KA_20260207
dc.subjectAzeotrope
dc.subjectMethanol
dc.subjectPervaporation
dc.subjectTrimethyl borate
dc.titlePerformance evaluation of cellulose acetate (CA)/polyvinylpyrrolidone (PVP) membranes in the pervaporation separation of trimethyl borate/methanol azeotrope
dc.title.alternativeTrimetil borat/metanol azeotropunun pervaporasyonla ayrılmasında selüloz asetat (SA)/ polivinilpirolidon (PVP) membranların performans değerlendirmesi
dc.typeArticle

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